Stop motion of looms for weaving



H. HAIGH.

STOP MOTION 0F LOOMS FOR WEAVING.

APPLICATION FILED AUG.I, 192].

Patented Aug. 8, 1922.

Fig.1-

tilhlllll lli'fi llENRY HAIGH, OF BATLE'Y, ENG-LAND.

STOP MOTION OF LOOMS FOR WEAVING.

Application filed August 1 1921.

To all whom it may concern:

Be it known that L H NRY HAIGH, a subject of King George V of Great Britain, re-,

siding at Batley, in the county of York, England, have invented a new and useful Improvement Connected with Stop Motions of Looms for Weaving (for which I have filed an application in Great Britain on Feb. 1, 1917, Patent No. 110,267), of which the following is a specification.

This invention has reference to looms for weaving in which fast and loose pulleys are employed and particularly to means for applying a brake to the fast pulley which has been previously effected by a brake strap acting on a brake pulley, secured to the fast pulley and controlled by lever actuated by an inclined surface on a sliding rod connected to the knocking off lever, or operated by incline on the strap fork bar, or by a brake block applied by spring or lever action. My invention has for its object the provision of improved means for self-actingly applying a brake to the fast or driving pulley when the stop motion operates or the weaver actuates the knocking-ofi lever, so that the loom may be stopped when the shuttles are fully home in their boxes, whereby banging off or violent concussion or vibration is prevented and breakage of the parts minimized.

In order that my invention may be fully understood reference is hereinafter had to the accompanying drawing, in which Fig. 1 is an elevation, viewed from the rear of the loom, showing the application of my improved brake device to act on the fast pulley on stoppage of the loom;

. Fig. 2 is an elevation of the parts looking in the direction of arrow A Fig. 1; and

Fig. 3 is a plan view of the brake device.

Referring to the drawing, I pivotally connect to a suitable stand abolted to the floor or to a bracket secured to the part b of the loom frame, a segmental plate or block 0 faced at 0 with leather or the like and adapted when placed in operative position to engage with the periphery of the fast or driving pulley (Z, the said plate occupying a position intermediate of the portions of the driving belt or strap 6 passing to and from the said pulley, and quite clear of same. The free end of the segmental plate has secured to or formed thereon an arm or extension 7 Specification of Letters latent.

Patented Aug, 8, 1922.

Serial No. 439,022.

to the outer end of which is secured a'iinger or projection 9 extending outwardly at right angles to the said arm f and having onits underside at the outer end thereof an inclined cam or wedge shaped surface g which is adapted to rest on and ride over a portion of the strap guide it. The said strap guide is moved endwise in one direction to transfer the strap from the fast pulley (Z to the loose pulley cl by the operation of the weft stop motion, or by the weaver in stopping the loom by hand, in the ordinary manner, and as the said strap guide it is thus moved rearwardly it wipes under the inclined surface 9' of the finger or projection g and thus permits it to descend, the descent being assisted by the retraction of a light spring 2' connected at one end to a link 70 attached by a plate Z to the finger g and secured at the opposite end to the floor or any suitable fixed part.

The descent of the finger or projection g causes the segmental plate, moving on its pivot connection, to be lowered into engagement with the periphery of the fast pulley and thus apply brake pressure thereto to prevent violent concussion or vibration, and, on weft breakage, secure stoppage of the loom when the shuttles are fully home in the shuttle boxes, thus preventing traps or banging off and breakage of the parts.

On the re-starting of the loom, the strap guide it as it moves in the opposite direction to transfer the strap from the loose to the fast pulley, acts against the inclined surface 9 of the finger or projection 7 and elevates same to the position shown in Figs. 1 and 2, thus placing and maintaining the segmental plate or brake block 0 clear of the fast pulley during the normal running of the loom.

With my improvements the loom can be turned by hand to any extent desired after the brake has been applied.

The parts of the mechanism are suitably constructed to admit of same being applied to suit the positions of the fast and loose pulleys and the path of the driving strap, the stand a being adapted to be secured in the vertical position shown or in an angular position to adjust the segmental plate 0 in a convenient positionover the driving pulley to clear the driving strap, the other parts being adjustable also to accommodate them to the slight: differences in position or constructionof the parts of the loom to which the improvements are applied.

Having thus described my invention, What I claim as new and desire to secure by Let- 5 ters Patent is i 1. The combination, With e fastpulley, a

loose pulley, and a belt guide for moving a driving belt from one pulley to the other; of a stationary support, a friction brake block pivoted to the said support and adapted to' bear on the fast pulley, and a finger secured to the brake block and provided with an inclined under surface which bears on the said belt guide and supports the brake block V HENRY HAIGH.

Witnesses:

FRANK LURIE,

JAMES F. BnsT. 

